Samuel h



s. H.-WHITAKER GLOBE VALVE No. 75,094 Patented-Mar. 3, 1868-.

@nitrh tens gamut ffire.

Letters Patent No. 75,094, dated March 3,1868.

IMPROVEMENT IN. GLOBE-VALVES.

flit: seam mam tr iir'tlgm $211M ante ant making met at theme.

TO WHOM IT MAY CONCERN:

Be it known that I, SAMUEL H. WHITAKER, of Cincinnati, Hamilton county, Ohio, have invented a new and useful Improvement in Valves. I

This invention relates to a readilyrremovableand self-adjusting metallic seat for conicaLvalves, which insu es accurate seating of the valve at all times, and enables-a renewal of the bearing-surfaces without detaching the chamber or casing.

' Figure 1 is an axial section-0t a f'globe"-valve embodying-my invention.

Figure 2 shows my valve-seat audits accessories detached.

The neck, N, of the casing O is screw-threaded interiorly, to receive and hold a customary hub, P, whichis screw-threaded exteriorly, to fit the neck, and interiorly, to contain the screw-threaded stem, a, oi a conical valve, A. The diaphragm E is pierced, for the passage of steam or other fluid, but, in place of the usual valveseat, has a recess or socket for a gasket, D, of copper or other soft and impervious material, and for a metallic annulus, B, which, in the preferred form of my invention, is ehami'ered on both upper and lower inner edges [2 6', to constitute valve-seats. The socket e is made so much larger than the annular-disk B as to permit of a slight lateral play of the latter, to accommodate the valve. The disk B is held down 'to its place within the socket by means of an exteriorly screw-threaded tube called the clamp, G, having apertures, c, for the passage of the fluid, and nicks, c, to receive a screwdriver for attaching and detaching it.

The above arrangement possesses several decided advantages; for example, it is no longer necessary to laboriously grind the valve and seat in line, because,.however much they may vary, theclosure'of thevalve operates to bring the seat immediately into line. Should the chamfer b wear leaky or uneven, a reversal of theannular disk will present a new and effective seat. Should both seats become worn, the annular disk may be taken out and reground, "or replaced by a new one, without disturbing the body or casing The provision of' the gasket D insures a tight joint without elaborate finish of the opposing surfaces of the diskand socket.

Although preferring the double and reversible forufiiescribed for the self-adjusting disk B, I reserve the right to use the sunic with asingle chamfer.

I claim herein as new, and of my invention- 1 1. The self-adjusting metallic valve-seat B, in combination with a conical valve, A, substantially as and for the purposes set forth.

2. In combination with the aforesaid movable valve-seat B, applied and operating asdescribcd, I further claim the compressible packing-ring D, for the purpose set forth.

I also claim the combination of the movable seat B and screw-clamp C, substantially as and for the purposes set forth.

In testimony of which invention, I hereunto set my hand.

SAML H. WHITAKER.

V Witnesses:

Geo. H; KNIGHT, JAMES H. LAYMAN. 

